最も影響力のあった米国の発明
本記事は、アメリカが生んだ最も影響力のある発明をランキング形式で紹介。インターネットやトランジスタ、航空機など、現代社会の基盤を築いた画期的なイノベーションを、その社会的・経済的インパクトとともに考察する。
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The article examines construction cost trends and finds that, unlike most other sectors, construction costs rarely fall over time. This is linked to stagnant or declining productivity in construction, especially in large, wealthy countries like the U.S., where productivity improvements seen in manufacturing and agriculture are absent.
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